[Junior]

I uploaded this file five minutes ago and it got yanked because someone beat me to the draw. Oh well. Here it is, folks.

[PatrickHenry]

From the article:
The suggestion that the speed of light can change is based on data collected by UNSW astronomer John Webb, who posed a conundrum when he found that light from a distant quasar, a star-like object, had absorbed the wrong type of photons from interstellar clouds on its 12 billion year journey to earth.

The "wrong type of photons"? I suppose this is the result of sloppy journalism, so common in accounts like this. But there must be more to it than we're told in this article.